* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

.nav-bar {
    background: #f8f9fa;
    padding: 15px;
    border-bottom: 1px solid #e5e5e5;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    list-style: none;
}

.nav-links a {
    color: #666;
    text-decoration: none;
    font-size: 14px;
}

.nav-links a:hover {
    color: #1890ff;
}

.login-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 30px;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #666;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
}

input:focus {
    outline: none;
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24,144,255,0.2);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: #1890ff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.login-btn:hover {
    background: #40a9ff;
}

.signup-link {
    text-align: center;
    margin-top: 20px;
    color: #666;
}

.signup-link a {
    color: #1890ff;
    text-decoration: none;
}